diff --git a/clock.js b/clock.js
index 44e0283..29ff9c4 100644
--- a/clock.js
+++ b/clock.js
@@ -41,25 +41,26 @@
     }
 
     // Position markers based on the current clock size
-    const radius = clock.offsetWidth / 2 - 20;
+    const markerRadius = clock.offsetWidth / 2 - 20;
     markers.forEach((m, i) => {
       const angle = (i / 16) * 2 * Math.PI;
-      const x = radius * Math.sin(angle);
-      const y = -radius * Math.cos(angle);
+      const x = markerRadius * Math.sin(angle);
+      const y = -markerRadius * Math.cos(angle);
       m.style.left = `${clock.offsetWidth / 2 + x}px`;
       m.style.top = `${clock.offsetHeight / 2 + y}px`;
     });
 
-    // Tick lengths based on radius
-    const lenBig = radius * 0.12;
-    const lenMid = radius * 0.08;
-    const lenSmall = radius * 0.05;
+    // Tick lengths based on the marker radius
+    const lenBig = markerRadius * 0.12;
+    const lenMid = markerRadius * 0.08;
+    const lenSmall = markerRadius * 0.05;
 
     ticks.forEach((t, i) => {
       let len = lenSmall;
       if (t.classList.contains('big')) len = lenBig;
       else if (t.classList.contains('mid')) len = lenMid;
-      const innerR = radius - len;
+      const outerR = clock.offsetWidth / 2 - 2;
+      const innerR = outerR - len;
       const angle = (i / 256) * 2 * Math.PI;
       const x = innerR * Math.sin(angle);
       const y = -innerR * Math.cos(angle);